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W. KAISLING. COMBINATION LIGHTING AND IGNITION swIIcH.

APPLICATION FIL'ED JUNE 6,1917.

' Patented Dec. 6, 1921.

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COMBINATION LIGHTING AND IGNITION SWITCH.

APPLICATIO N FILED JUNE 6, i917.

Patented .Dec. 6; 1921.

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illillTED STATES PATENT OFFICE.

WILLIAIVI KAISLING, 0F CHICAGO, ILLINOIS, ASSIGNCR TO KELLOGG SWITCHBOARD AND SUPPLY COIVIPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINCIS.

Specification of Letters Patent.

Patented Dec. 6, 1921.

Application filed June 6, 1917. Serial No. 173,084.

To all whomz't may concern Be it known that 1, WILLIAM KAIsLrNo, a citizen of the United States of America, residing in Chicago, county of Cook, and State of Illinois, have invented certain new and useful improvements in Combination Lighting and Ignition Switches, of which the following is a specification.

My invention relates to electrical switches in general and has to do more particularly with switches for controlling a plurality of circuits, the present embodiment of my invention being constructed more particularly for use in connection with ignition and light circuits for automobiles. my invention to produce an improved device oi the class described which embodies desirable features and advantages all in a simple, eiiioient, and economical manner; and to the accomplishment of this object and such others as may hereinafter appear, the invention consists in novel details of construction, parts, and combinations of parts hereinafter desc ibed, and, partici larly pointed out in the appended claims,

reference being had to the accompanying drawings forming a part hereoi in which the sanie reference characters indicate like parts throughout the several views and in which Figure l is a face view of the combination switch oi my invention;

Fig. 2 is a right side elevation of Fig. 1;

Fig. 3 is a rear view of Fig. 1;

Fig. 4 is an interior face view of the mechanism with the cap removed;

Fig. 5 is a right side elevation of Fig. at omitting the mechanism on the back of the mounting plate;

Fig. 6 is a left side elevation of Fig. 4

omitting the mechanism on the back of the mounting plate;

Fig. 7 is a bottom view of Fig. 4: showing one of the springs broken away and omitting the mechanism on the back of the mounting plate;

Fig. 8 is a partial view of the interior mechanism, part of the apparatus being removed to more clearly show the locking arrangement, the switching knobs being at normal and unlocked;

Fig. 9 is similar to Fig. 8, showing the locking mechanism in its operated position;

FigYlO is a sectional view through the lighting switch unit to more clearly show It is an object oi" the supporting means of the actuating member:

Fig. 11 is a sectional view through the locking mechanism;

Figs. 12, 18 and ll illustrate the normal and two actuating positions of the lighting switch unit;

Figs. 15 and 16 illustrate the normal and actuated positions of the ignition switch unit;

Fig. 17 is a side view ofthe overload relay associated with the switch;

Fig. 18 is a sectional view of the relay taken on the line 18-18 of Fig. 3;

Fig. 19 is a perspective view of the arma' ture of the overload relay;

Fig. 20 is a perspective viewof one of the contact springs, and

' Fig. 21 is a partial sectional view showing the method of securing a spring to the mounting plate.

Referring now in general to my invention as illustrated, it comprises a lighting: switch unit L and an ignition switch unit 1 The lighting witch unit L has a normal position A and two operative positions 13 and C, and when the switch is in position B the headlights, tail light and cowl light are lighted brightly to full candle power, and when in position C the head lights are dimmed but the tail and cowl lights remain at the same brilliancy as when the lighting switch unit L was in its position B. I do not wish to be limited to this particular arrangement as many different combinations can be made without departing from the invention.

The ignition switch unit lid h as a normal position D and an operative position E, and when the ignition switch is moved into position the ignition apparatus is rendered operative and the horn circuit is closed, as will be more fully hereinafter described. I also provide locking mechanism which consists preferably of a standard tumbler look which controls a sliding lock plate which is adapted to lock the lighting and ignition switch units L and M. The locking mechanism is so arranged that it operates only when the switch M is in its normal or inoperative position D, but will operate to lock the switch L in any position. lVhen the ignition switch unit M is in its position D the lock ran only be turned part way by the key. Now if the operator attempts to operate the lock he is at once aware that the ignition. switch is in its operative position and must be moved to its inoperative position D so that the lock can be operated and the key withdrawn.

The locking mechanism of the lighting switch unit L is so constructed that the key may be turned to lock the said lighting switch unit L in any of its positions A, or B, so that the operator can leave the lights turned off or on and still look the ignition switch against operation.

Referring now more in detail to my invention as illustrated, it comprises preferably a mounting base or plate 1 made of any suitable insulating material, having studs 2 and 3 fastened to it in any suitable manner, as by staking, (as illustrated in Fig. 10). The stud 2 is provided for the lighting switch unit L, and the stud 3 for the ignition switch unit M. The lighting switch unit L comprises a switching knob 4 preferably molded in the form illustrated in Figs. 4, 5 and 6, and made of any suitable insulating molding material such as bakelite or the like. The knob i is provided with a bearin 5 into which the stud 2 fits, (as shown in rig. The knob a is also provided with a button ilintegrally formed with said knob, the button being adapted to be grasped by the hand of the operator for operating the lighting switch unit L. A conducting plate 6 is provided, preferably set in the said knob during the molding of the same, the said plate having portions 7, 8 and 21 turned up at right angles to the said plate 6 to form conducting segments which cooperate with the contact springs 9, 10 and 11 associated with the lighting switch unit L. The springs 9, 10 and 11 are all similar in shape and are all secured to the plate 1 in the same manner, so that by describing the method for securing spring 9, a further description of the method of fastening the others will be unnecessary.

The spring 9 (formed as illustrated in Fig. 20) has its free extremity bent substantially parallel with the attached portion of the arm 13, the free end being rounded to form a contact portion it for engagement with the knob 4c and its conducting strips 7 and 8. The spring normally rests on the concave portion 15 of the annular surface 15 of button The tongue 9 of the spring 9 is forced into a suitable opening 16 in the plate 1, the said opening being slightly smaller than the tongue 9 so as to produce a forced fit. The spring 9 is provided with shoulders 17 which rest against the top surface of the plate 1 when the spring is in position, and with shoulders 18 which e tend slightly beyond the bottom surface of the plate 1. The shoulders 18 are turned over or riveted to hold the said spring in position to prevent it from being withdrawn from the said plate 1. To produce a snap action when the switching knob is moved to its different operative positions, a portion of the annular surface 15 of the knob is, corrugated or formed into concave portions, and the conducting segments 7, 8 and 21 are also corrugated and provided with concave portions so that when the switching knob 4 is in the position illustrated in Figs. 4%, 5 and 6, the free ends of the springs 9, 10 and 11 rest in these concave portions. Now when the switching knob 4 is moved from one position to another, the free ends of the springs leave the furrows of the corrugated portions and ride upon ridges 19, and due to the springs being under tenion, when the springs leave the apcxes of the ridges 19 they tend to turn the knob 4, thus producing a snap action for the said switching knob, at the sam time the springs hold the said switching knob 4 in its new position. The springs 9, 10 and 11 have their respective tongues 9 19 and 11 extend through the plate 1 to form connectins? terminals.

in clamping member 23 is provided for each of the springs 10 and 11, and provides means for securing electrical conductors to the said springs. A. threaded screw 24; is provided with a split lock washer 25 for securely holding the electrical conductors between the said switch spring tongues 10 and 11 and the contact surfaces of the clamping members 23. Tongue 9 of the )l'lllg 9 is connected to one terminal of the winding the overload relay by means of a screw 2% and lock washer 25.

or purposes that will 1 c more fully hereinafter described, a resistance coil or unit 28 is connected to the terminals of the contact springs 10 and 11, this resistance coil being used in the lighting circuit arrangement to cut down the current flow through the lighting circuit to dim the lights contained therein. hen the lighting switch is in normal position it, the lighting circuits are open, as the contact springs 9 and 11 rest upon insulated portions of the annular surface 15 of the knob 1. hen the switclr ing knob is moved to position B, the contact springs 9 and 10 engage the segment 8, and spring 11 engages the segment 21, as clearly illustrated in Fig. 13, thus giving one combination of lights. If the switching knob 4C is now moved to position C, the contact spring 9 engar-es the segment 7, the contact spring 10 es an insulated portion of the annular u 7 cc 15 and the spring 11 engages a portion of the segment 8, thus giving the same combination of lights but cutting in the resistance 28 to dim the headlights, as will be more fully hereinafter described.

Referring now to the ignition switch M, it comprises a switching knob 30 similar in construction to the knob 4 of .the lighting switch unit L with the exception of the number of conducting segments and spring combination associated with the said segments. Contact springs 31, 32, 33 and 34 associated with the ignition switch unit M are mounted in plate 1 in a similar manner to that described in connection with the contact springs associated with the lighting switch unit L. The switching knob 30 is also provided with a plate 35 having segments 36, 37, 38 and 39 turned up at right angles to the said plate 35 to form contact surfaces to be engaged by the contacting springs 31, 32, 33 and 34, with which they are operatively associated. The springs 31, 32, 33 and 34 associated with the ignition switch M have their tongue portions 31 32 33 and 34 extend through the bottom of the plate 1 to form terminal members for their respective springs, screws 24, lock washers 25, and clamping members 23 being provided for the said terminals, as previously described in connection with the lighting switch unit L. The contact springs 32 and 33 are formed similarly to those associated with the lighting switch unit L. The contact springs 31 and 3a are L-shaped, the free ends of the said springs 31 and 34: being shaped to conform to the annular surface 40 of the knob 30. A portion of the annular surface 40 is also corrugated or concaved, for purposes already described in connection with the lighting switch unit L.

When th ignition switch M is in its normal position D, there is no circuit connection between the contact springs (as illustrated in Fig. 15). When the switching knob 30 is moved to its position E, the contact springs 31, 32, 33 and 34 engage their respective conducting segments 36, 37, 38 and 39, (as illustrated in Fig. 16) to close operating circuits that will be more fully hereinafter described.

A locking arrangement, whereby the lighting and ignition switch units L and M may be locked against movement, is provided, and includes a well known tumbler lock which is set into a recess in the plate 1 and operatively associated with a slidable look ing plate 62. The barrel 51 is provided with reduced portion 51 of a size to just fit into the circular orifice 51 in the cover cap 95. The barrel 51 of the lock is provided with a pair of downwardly extending lugs 52 and 53 which fit into a suitably recessed opening 54 which is provided with two notches 55 and 56 disposed in the recess 54 to receive the two downwardly extending lugs 52 and 53 of the lock. The notches 55 and 56 are a trifle smaller than the size of the lugs so that the lugs must be forced into these notches to insure a firm seat for the lock 50. [is illustrated in Fig. 11, the lock is provided with a pin 60 which is fastened to the cylinder 61 of the lock 50 in any suitable manner, so that when the key is turned the pin moves with the cylinder.

The locking mechanism includes a sliding lock plate 62 set in a recess 63 of the plate 1. Oblong openings 64 and 65 are provided in the locking plate 62 through which extend the studs 2 and 3. Collars 66 and 6? are provided which slip over said studs 2 and 3 and rest in the openings 6 and 65 of said plate 62 to form guiding means for the plat 62. The collars 66 and 67 also maintain the sliding plate 62 in its position in recess 63. The knobs and 30 keep the collars 66 and 67 in position. These collars can not be removed until the cover cap 95 is first removed and then the knobs i and 30 removed. I have preferably arranged the ignition switch unit M so that it can only be locked in its inoperative position if), and the lighting switch unit L that it may be locked in any of its actuated or normal positions, as hereinbefore mentioned. The switching knob d of the lighting switch unit L is provided with a pin 70 suitably fastened to it for cooperating with an arcuate opening 71 in the plate 62. Three short slots 72, 73 and 74 are also provided in the plate 62. and extend into the arcuate opening 71.

These slots codpcrate with the pin 70 of the lighting switch knob e to lock the said knob in any of its different positions. [in arcuate recess 75 is provided in the plate 1 to limit the movement of the switch knob I} by the pin 70 engaging the ends of the said recess 7 5. A pin is also secured to the ignition switching knob 30 and extends downward into an arcuate recess 81 in the plate 1, the said recess limiting the movement of the knob in its normal and actuated positions. The pin 80 also cooperates with the locking glate 62 to lock the ignition switch, as will be more fully described.

In Fig. 8 I have shown th locking mechanism and the switching knobs 4c and 30 of.

the switches L and M in their normal position, and the locking mechanism in an unactuated position. In Fig. 9 I have shown the locking mechanism operated and the switching knobs T and 30 of the switches L and M in their normal positions but locked against movement. To lock the switch, the key 85 is turned until the pin 60 engages the projection 86 of the plate 62. This moves the plate 62 to the right into the position j shown in Fig. 9. The pins 70of the switching knob d of lighting switch Lis new in the slot 7 3, thus preventing any movement of the switching knob 4: of the switch L, and the switching knob 30 of the ignition switch unit L can not be actuated due to the edge 87 of the plate 62 engaging the pin 80. Assuming now that the ignition switch is in its position E, (the pin of the said switching knob 30 being shown in dotted line in Fig.

8) and that the lighting switching knob 4 is in any of its operative positions, if the key is inserted in the lock and an attempt made to operatethe said lock, the key can only be turned part way until the edge 88 of the plate 62 comes in contact with the pin 80. The key can not be withdrawn when it is in this position, and this unsuccessful attempt to turn the key will indicate to the operator that the ignition switch member is in operative position. Then to lock the two switch members L and M, the member M must be moved to its normal or inoperative position 1), and when in this position the pin is beyond the edge 88 of the plate 62 and the key can now be turned to lock the switch units L and M. The lighting switch unit L may be locked in either of its actuated positions B or C provided the ignition switch M is in its inoperative position D, as may readily be seen from inspection of Figs. 8 and 9. To yieldingly hold the plate 62 in its locked or unlocked positions I provide an arm 90 pivoted to the plate 1 by means of the pivot pin 91. Notches 92 and 93 are provided in the plate 62 in which the arm 90 rests. The arm 90 is spring pressed in the said notches by means of the spring 94 which is suitably fastened to the plate 1.

A cap 95 is provided to inclose the mechanism and a top or name plate 96 is also provided, the two being held together by means of a stud 97 which is turned over or riveted after passing through suitable openings in plates 95 and 96. Ferrules 98 and 99 are provided and pass through suitable openings in the cap 95 and the plate 96, the ferrules being of a size to permit the passage of the switching nobs 4 and 30. The ferrules are spun over the openings of the cap 95, to hold the plate 96 and the cap 95 in alinement. The ferrules 98 and 99 are of a size to fit into the annular grooves in the knobs 4 and 30 (as shown most clearly in Fig. thereby preventing the said knobs 4 and from being raised off of the pins or studs 2 and 3 until the cover cap 95 has first been removed. The cap 95 also holds the tumbler barrel in position, as most clearly shown in Figs. 2 and 11. To remove the knobs 4 and 30 and the tumbler barrel 50, it is merely necessary to remove the cover cap 95, and then the knobs 4 and 30 and the tumbler barrel 50 may be removed from the mounting plate 1. The mounting plate 1 has an annular shoulder 100 upon which the cap 95 rests when in position, and the stud 97 passes through a suitable opening 101 in the plate 1. The said stud 97 is provided with a threaded end portion to receive a nut 102 which holds the cap securely upon the plate 1. The cap 95 and the plate 96 are also provided with suitable openings for the lock 50.

Associated with the switching device is an overload relay OL which comprises a heel iron 103 to which the core 104 of the relay is suitably fastened. A suitable winding 105 is provided for the said relay and has one of its terminals secured to the terminal 9 and its other terminal connected to the contact piece 106, which contact piece is suitably mounted upon an insulation plate 107, which plate is in turn mounted upon the heel iron 103 by means of screws 108. A contact spring 109 is in normal engagement with the contact 106, the said spring being suitably fastened to the plate 107, the terminal of the said spring 109 being connected to the ter iinal 32 in armature 110 is provided for the relay, and is supported by the heel iron 103. The heel iron 103 is provided with upturned ears 111, the said ears being slotted at 111 to receive the extensions 110 of the armature 110. The armature 110 is pivotally supported by the said slots 111 and is held in place by means of a pin 112 and a spring 113. The said pin 112 lits into a suitable opening in the core of the magnet and extends through an opening 114 in the armature 110. The tension spring 113 has one end fastened to the tongue projection 110 of the armature 110 by means of the rivet 115. The free end of the said spring 113 is provided with a suitable opening 116 which is of a size to lit over the reduced portion of the pin 112. This spring 113 pirotally secures the armature 110 in the ears 111 of the heel iron 103. The spring also holds the armature in its normal position under spring tension and also prevents the pin 112 from displacement in the core 104. An insulating button 117 is suitably secured to the spring 109, and is adapted to be engaged by the armature 110 to open the normally closed contacts 109 and 106, upon the energization of the said relay. The relay 0L is held in place by means of the extension 103 of the heel iron 103, which extension is secured to the terminal 9 by means of a screw 24. The spring 109 is provided with an extension 109 which is secured to the terminal 32 by means of a screw 24.

To remove the armature from the relay, it is only necessary to raise the spring 113, turn it to either side and remove the pin 112 from the core of the magnet, and then the armature may be removed by sliding the ar mature ears 110 and 110 out of their bearings in the heel iron of the relay.

While the invention has been described with particular reference to the details of construction, it should be understood that it is not limited thereto, as many changes and modifications may be made therein without departing therefrom, and I therefore wish to cover all such changes and modifications which come within the spirit and scope of the appended claims.

What I claim as new and desire to secure by United States Letters Patent is:

switches, slots for said lock plate through which said studs project, collars adapted to fit over said studs into the slots of said lock plate, said collars forming guides for said plate and bearings for said rotatable contact makers, and a cover cap for preventing displacement of said contact makers.

2. A switch device of the character described including a mounting plate, a pair of pins secured to said mounting plate, ro-

tatable contact makers supported by said.

pins, locking mechanism for securing saic rotatable contact makers against movement, a lock controlling member for actuating said lock mechanism, a recess in said mounting plate into which said lock controlling member sits, and a cover cap for said device for holding said rotatable contact makers and said lock controlling member in position.

3. A device of the character described including a mounting plate, a pair of pins supported by said mounting plate, a rotatable contact maker supported by each of said pins, a slidable lock plate provided with slots through which said pins project, collars for said pins which fit into the slots of said locking plate, forming guiding means there for, and against which said rotatable contact makers rest, and a pin for each of said rotatable members adapted to cooperate with said lock plate to prevent actuation of said contact makers,

4. A device of the character described including a mounting member, an upwardly extending pin secured to said mounting member, a contact maker supported by said pin, a lock element mounted between said contact maker and said mounting plate, a slot cut in said lock clement through which said pin projects, a collar adapted to fit over said pin into said slot, said collar supporting said contact maker and forming guiding means for said lock element, and a cover cap for preventing displacement of said contact makers.

5. A device of the character described including a mounting plate, a rotatable contact maker supported by said mounting plate provided with an annular peripheral surface, said annular surface being provided with depressions, contact springs suitably supported by said mounting plate provided with rounded end portions adapted to fit into said depressions to hold said contact maker in position, a locking device for preventing actuation of said contact maker, and a cover cap adapted to fit onto said mounting plate provided with an orifice through which part of said contact maker protrudes, the inner peripheral surface of said orifice fitting into an annular groove in said contact maker to prevent longitudinal movement of said contact maker.

6. A device of the character described in cluding a mounting plate, an upwardly extending pin secured to said plate, a contact maker rotatably supported by said pin, said contact maker being provided with an annular peripheral surface having depressions, contact springs provided with ended portions adapted to conform to said depressions, wherebysaid springs operate to give a snap movement to said contact maker when operated, a locking device for preventing actuation of said contact maker, a cover member adapted to fit onto said mounting plate, an orifice in said cover through which a portion of said contact maker protrudes, and an annular groove formed in said contact maker, said annular groove adapted to fit into said orifice whereby said cover prevents longitudinal movement of said contact maker.

7. A device of the character described including a mounting plate, a rotatable contact maker supported by said mounting plate provided with an annular peripheral outer surface, a portion of said surface being of conducting material and a portion of insulating material, depressions in said surface, contact springs provided with rounded end portions adapted to normally rest in the depressions of insulating material, and adapted to rest in the depressions of conducting material when said contact maker is in operative position, a locking device for preventing actuation of said contact maker, a cover member adapted to fit onto said mounting plate, an orifice in said cover through which a portion of said contact maker protrudes, and an annular groove formed in said contact maker, said annular groove adapted to fit into said orifice whereby said cover prevents longitudinal movement of said contact maker.

8. A device of the character described including a mounting member, a contact maker rotatably supported by a pin secured to said mounting member, an annular peripheral surface for said contact maker, a portion of said surface being formed of conducting material and a portion of said surface being formed of insulating material, depressions in said surface, contact springs provided with rounded end portions adapted to fit into said depressions to yieldingly hold said contact maker in position, a lockingplate for preventing actuation of said contact maker, a cylindrical cup-shaped cover adapted to fit onto said mounting member, an orifice formed in said cover through which the actuating member of said contact maker protrudes, and an annular groove formed in said contact maker, the orifices in said cover adapted to fit into said annular groove to prevent longitudinal movement of said contact maker.

9. A device of the character described including a mounting plate provided with a recess, a switching member supported by said mounting plate, a lock controlling device for preventing actuation of said switching member and adapted to sit in said recess, and a cover cap for said device adapted to hold said lock controlling device in said recess.

10. A device of the character described including a mounting plate, a pair of: rotatable switch members supported by said mounting plate, a lock controlling member supported by said mounting plate, and a cover cap adapted to fit onto said mounting plate and provided with orifices through which said contact operating members and said lock controlling member project, but which holds said members in position.

11. A device of the character described including a mounting plate provided with a projecting pin, a movable contact maker provided with a cylindrical recess adapted to receive said pin to rotatabl support said contact maker, an annular groove cut in said contact maker, a cover cap adapted to fit onto said mounting plate provided with an annular orifice, the periphery of said orifice being adapted to lit into said annular groove to secure said contact maker in position,

12. A device of the character described including a mounting plate, a rotatable contact maker supported by said mounting plate, a pin secured to said contact maker, an arcuate slot cut in said mounting plate adapted to receive said pin to limit the movement oi said contact mak r, a slidable lock plate mounted between said contact maker and said mounting plate, and a slot cut in said lock plate adapted to cooperate with said pin to lock said contact maker against movement.

13. A device or the character described including a mounting plate, a contact maker supported by said plate, a downwardly proj ect-ing pin carried by said contact maker, an arcuate slot cut in said plate adapted to receive said pin to limit the movement of said contact maker, and a lock member adapted to cooperate with said pin to secure said contact maker against movement.

14. A switch device including a light switch and an ignition switch, amounting plate provided with a pair of firmly secured studs, a movable contact maker for said light switch supported by one of said studs, a movable contact member for said ignition switch supported by the other of said studs, a slidable lock plate provided with slots through which said studs project, collars adapted to fit over said studs into the slots of said lock plate, said collars forming guides for said plate and bearings for said rotatable contact makers, and a cover cap for maintaining said contact makers in position.

15. A device of the character described including a mounting plate, a pair of supporting studs secured to said plate, a rotatable contact maker supported by each of said supporting studs, a pin secured to each of said contact makers, an arcuate slot cut in said mounting plate and cooperating with the pin of one of said contact makers to limit the movement thereof, a slidable lock plate mounted between said contact makers and said mounting plate, an arcuate Slot cut in said lock plate to limit the movement of the other of said contact makers, and slots cut in said lock plate adapted to cooperate with said pins to lock said contact makers against actuation.

16. A device of the character described having a spring, an element having an arcuate bearing surface for said spring, aid surface provided with a number of indentations for said spring to engage in or ler to anchor the switch mechanism in va ious adjusted positions; an ignition circuit through said switch including said spring and a conducting element in one of said incentations; a handle for operation to cause reciprocating rotary adjustment between said spring and said element; a switch base and a pin, said pin supporting said handle for rotation; a lock for said switch supported by said base; a cover for said device arranged for attachment to said base, said cover when attached thereto maintaining said handle, said spring and said element and said lock in adjusted positions respectively.

17. A device of the character described including a pair of switches each including a spring, indentations for said springs to engage to hold the switch mechanism in various adjusted positions, some of said indentations containing metallic contact terminals for said springs to engage, a common switch base, a pair of manually operated actuating members for said switches respectively to change the relations between said springs and indentations, said members supported on pins and said pins supported on said base, a lock supported on said base and a member of said device in operative relation with said lock to be locked thereby, a cover for said device fastened to said base and holding said members, said pins, said lock and said base in their properly adjusted relation.

18. An electric switch comprising a spring member, a bearing surface for said spring to ride over, said surface having recessed portions for engagement by said spring to hold'the mechanism in on and off positions, respectively, a circuit conductor having a terminal and a recessed portion of said surface engaged by said spring when the switch is in on position, manually operated means for changing the adjustment between said springs and surface to place the switch in on or oil positions, a base member, a cover cap for said switch, means for fastening said cover cap and base together, and cotiperating means for said manually operated means and said cover cap whereby when said cover cap is secured to said base, said manually operating means is secured in position, thereby holding said bearing surface and said spring in adjusted engaging position.

19. A device of the character descrlbed including a mounting plate, a contact maker, a pin engaging a recess in said mounting plate for pivotally supporting said contact maker upon said mounting plate, contact springs and depressions disposed in registrational arrangement for holding said contact maker in position, a locking device for preventing actuation of said contact maker, and a cover cap adapted to fit onto said mounting plate and provided with an orifice through which part of said contact maker protrudes, the inner peripheral surface of said orifice fitting into an annular groove in said contact maker to prevent the longitudinal movementof said contact maker.

20. A device of the character described including a mounting plate, a contact maker, a pin for pivotally supporting said contact maker upon said mounting plate, contact springs and depressions disposed in a mannor to make registration with each other to retain said contact maker in position, a locking means for preventing the actuation of said contact maker, and a cover cap pro vided with orifices for permitting the partial protrusion of said contact maker and a part or said locking means thereby preventing the endwise movement of said contact member and locking means.

21. A device of the character described, including a mounting plate, a rotatable contact maker pivotally supported upon said mounting plate by pin engaging a recess in said mounting plate, contact springs disposed in a registrational manner with a plurality of depressions so that said contact springs engage different groups of said depressions when said contact maker is rotated, locking means for preventing the rotation of said contact maker, and a cover cap adapted to fit onto said mounting plate and to prevent the longitudinal movement of said contact maker and said locking means.

22. A device of the character described including a mounting plate, a rotatable contact maker pivotally supported upon said mounting plate by a pin engaging a recess in said mounting plate and adapted to be set in different positions, contact springs operatively associated with depressions greater in number than said contact springs and disposed in a manner so that said springs register with certain groups of said depressions when said cont-act member is set in its different positions, the registration of said springs and depressions controlled by said contact maker, and a cover cap adapted to fit onto said mounting plate provided with an orifice through which part of said contact maker protrudes, the inner peripheral surface of said orifice fitting into an annular groove in said contact maker to prevent longitudinal movement of said contact maker.

23. A device or" the character described including a mounting plate, a rotatable contact maker suitably supported by said mounting plate, and adapted to rest in various positions, contact springs provided with rounded end portions and disposed in a registrational manner with a plurality of depressions so that said rounded end portions engage said depressions when said contact maker is at rest and to leave the then engaged depressions and engage other depressions when said contact maker is rotated to another position, the springs and cooperating depressions cooperating to retain said contact maker in its various positions, a locking member for preventing the rotation or said contact maker, and a cover cap adapted to fit onto said mounting plate provided with an orifice to permit the protrusion of a part of said contact maker to prevent its longitudinal movement but to allow its rotary movement.

24. A device of the character described including a mounting plate, a supporting pin engaging a recess in said plate, a rotatable contact maker pivotally supported by said pin and adapted to be moved to a plurality of positions, contact springs having rounded end portions in registration with suitable depressions for holding said contact maker in position, a locking elementior preventing the rotation of said contact maker, and a cover cap for said device adapted to permit access to said contact maker but to prevent its longitudinal movement and to prevent longitudinal movement of said locking element.

25. A device of the character described including a mounting plate, a rotatable contact maker pivot-ally supported by a pin engaging a recess in said plate, contact springs provided with rounded end portions adapted and disposed in a mannerto permit their registration with metallic contact depressions and non-contact depressions to yieldingly hold said contact maker in position, and a cylindrical shaped cover cap adapted to fit into said mounting member, an orifice in said cover cap through which the actuating member of said contact maker protrudes,

and an annular groove formed in said contact maker, the orifice in said cover adapted to fit into said annular groove to prevent longitudinal movement of said contact maker. V

26. A device of the character described including a mounting plate, a switching member adapted to be set in different positions pivotally supported upon said plate, contact springs, a plurality of depressions disposed and adapted to register with said contact springs when said switching member is set in any of its different positions, and to yieldingly hold said switching member in position, locking means for preventing the actuation or" said switching member, a lock barrel to control said locking means, and a cover cap for said device and adapted to prevent the displacement of said switching member but to allow its being set in its different positions and to prevent displacement of said lock barrel.

27. A device of the character described including a mounting plate, a rotatable switching member pivotally supported by a pin engaging a recess in said plate and adapted to be set in different positions, contact springs having rounded end portions, registering depressions greater in number than said contact springs and so disposed as to permit their registration with said contact springs when said switching member is rotated to its different positions, said springs and depressions adapted to hold said switchmember in position, locking means for preventing the rotation of said switching member, a lock barrel and a key plug therein for controlling said locking means, projections on said barrel to prevent rotation thereof, and a cover cap for said device and adapted to permit access to the handle of said switching member and to prevent the longitudinal movement of said switching member and of said lock barrel and key plug.

28. A device of the character described including a mounting plate, a switching member pivotally supported by a pin upon said plate, and adapted to be rotated and rest in differential positions, contact springs having rounded end portions disposed in operative relation with a plurality of depressions so that when said switching member is rotated to any of its positions, said rounded end portions are caused to register with certain depressions of said plurality of depressions to hold said switching member in position, alocking device for said switching member to prevent its rotation, a lock barrel and a key plug therein for controlling said locking means, projections on said barrel to prevent rotation thereof, and a cover cap adapted to be fitted onto said plate provided with an orifice for permitting the protrusion of a part of said switching member to prevent the endwise movement thereof and with a second orifice through which said key plug extends to prevent endwise movement of said key barrel.

29. A device of the character described including a mounting plate, a switching member supported by said plate and adapted to 'be rotated and rest in different positions, a

contact spring arranged and disposed to make registration with a plurality of depressions when said contact spring is at rest to hold said switching member in position and adapted to disengage the then engaged depressions and to engage other depressions when said member is rotated to another position, a locking device for said switching member to prevent its rotation, a key barrel for controlling said locking device, a plug protruding from the ends of said key barrel, an orifice in said plate to receive one end of said key plug, a member projecting from said key barrel to prevent the same from rotating, a cover cap adapted to fit onto said plate provided with an orifice through which a part of said switching member protrudes, a second orifice for said cover cap through which the other end of said lock plug protrudes, and an annular groove formed in said switching member, the orifice in said cover adapted to fit into said annular groove to prevent longitudinal movement of said contact maker.

Signed by me at Ghicago, in the county of Cook and State of Illinois, this 4th day of June, 1917.

WILLIAM KAISLING. 

